         5, 7, 11        11, 13, 17        17, 19, 23        41, 43, 47     101, 103, 107 
    107, 109, 113     191, 193, 197     227, 229, 233     311, 313, 317     347, 349, 353 
    461, 463, 467     641, 643, 647     821, 823, 827     857, 859, 863     881, 883, 887 
 1091, 1093, 1097  1277, 1279, 1283  1301, 1303, 1307  1427, 1429, 1433  1481, 1483, 1487 
 1487, 1489, 1493  1607, 1609, 1613  1871, 1873, 1877  1997, 1999, 2003  2081, 2083, 2087 
 2237, 2239, 2243  2267, 2269, 2273  2657, 2659, 2663  2687, 2689, 2693  3251, 3253, 3257 
 3461, 3463, 3467  3527, 3529, 3533  3671, 3673, 3677  3917, 3919, 3923  4001, 4003, 4007 
 4127, 4129, 4133  4517, 4519, 4523  4637, 4639, 4643  4787, 4789, 4793  4931, 4933, 4937 
 4967, 4969, 4973  5231, 5233, 5237  5477, 5479, 5483